#include <bits/stdc++.h>
using namespace std;
const int maxn = 1e5 + 5;
int n;
struct point {
long long x, y;
point () {}
point (long long x, long long y) : x(x), y(y) {}
point operator + (point p) const {
return point(x + p.x, y + p.y);
}
point operator - (point p) const {
return point(x - p.x, y - p.y);
}
} a[maxn];
int ord[maxn];
long long cross(point p, point q) { return p.x * q.y - p.y * q.x; }
long long dot(point p, point q) { return p.x * q.x + p.y * q.y; }
bool inSegment(point a, point b, point c) {
return cross(c - a, b - a) == 0 &&
dot(a - b, a - b) >= max(dot(a - c, a - c), dot(c - b, c - b));
}
int side(point a, point b, point c) {
long long x = cross(b - a, c - a);
if(x > 0) return 1;
else if (x < 0) return -1;
else return 0;
}
bool intersect(point a, point b, point c, point d) {
if(side(a, b, c) * side(a, b, d) == -1 &&
side(c, d, a) * side(c, d, b) == -1) return true;
for(auto i : {c, d}) if(inSegment(a, b, i)) return true;
for(auto i : {a, b}) if(inSegment(c, d, i)) return true;
return false;
}
int main() {
cin >> n;
for(int i = 0; i < n; i++) {
cin >> a[i].x >> a[i].y;
ord[i] = i;
}
auto cmp = [&] (int i, int j) {
return cross(a[i], a[j]) > 0 ||
(cross(a[i], a[j]) == 0 && dot(a[i], a[i]) < dot(a[j], a[j]));
};
sort(ord, ord + n, cmp);
vector <int> res;
set <pair <int, int>> can;
int cur = 0;
while(cur < n) {
int x = ord[cur];
for(int i : {-1, 1}) {
int y = (x + i + n) % n;
if(cross(a[x], a[y]) < 0) {
can.erase(make_pair(y, x));
// cout << "erase " << y+1 << " " << x+1 << endl;
}
}
if(cur == 0 || cross(a[ord[cur - 1]], a[ord[cur]]) != 0) {
bool bad = false;
for(auto i : can) {
if(intersect(a[i.first], a[i.second], point(0, 0), a[x])) {
bad = true;
break;
}
}
if(!bad) res.emplace_back(x+1);
// cout << "check " << x << endl;
}
for(int i : {-1, 1}) {
int y = (x + i + n) % n;
if(cross(a[x], a[y]) > 0) {
can.insert(make_pair(x, y));
// cout << "insert " << x+1 << " " << y+1 << endl;
}
}
cur++;
}
sort(res.begin(), res.end());
cout << res.size() << endl;
for(auto i : res) cout << i << " ";
cout << endl;
return 0;
}
